William mar ot marshall



w. M. MARSHALL.

Carbureter.

Patented July 7, 1868;

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Letters Patent No. 79,667, dated July 7, 1868.

IMPROVED AIR-GARBURETTER.

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Be it known that I, WILLIAM Manor MARSHALL, of Philadelphia, in the county of Philadelphia, in the State of Pennsylvania, have invented a new and useful Improvement in Air-Carburetters; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being bad to the accompanying drawings, and to the letters of reference marked thereon, making a part of this specification, in Which- Figure 1 represents, in perspective, a view of the bellows and carburettor attached. I

Figure 2 represent a longitudinal vertical section of the carburettor.

Figure 3 represents, in perspective, a view of a cone, formed of metal tube, to be attached to the carbu retter as an air-heater.

Similar letters of reference denote like parts where they occur in theseveral figures, in .which A is the bellows.

B C is the carburetter.

D is a small telescopic gasometer attached to carburettor.

E is a cone, of coiled metal tub, attached to carburetter.

F is a small gas-pipe, with stop-cock and burner.

Gis that portion of the cone E which passes into carburettor.

H is that portion of the cone E which is attached to bellows.

I represents carburetted air.

K represents hydrocarbon-fluid.

L is the tube leading carburetted air into the gasometer.

M is the tube conducting carburetted air tolpipes and burners.

' O is the supply-pipe. I

R is the funnel of supply-pipe.

S is-a jet of ignited carburetted air burning within the cone E.

W represents water in the gasometer.

I? P are the pans holding hydrocarbon-fluid.

The nature of my invention consists in connecting any suitable bellows, blower, or pump, with any suitable air-carburetter, by meansof a coiled copper or other'metal tube, formed into a cone or other shape, so as to present a large heating-surface to va flame oi carburetted air burning within its folds. By this means the air passing from the bellows to the carburetter must necessarily pass through a. considerable length of highlyheated pipe, and thus become sulliciently heated to promote a complete volatilization of the hydrocarbon-fluid contained in the pans of the carburettor, and working, with the same certainty in winter as in summer.

To enableothers skilled in the art to'malce and use my invention, I will proceed to describe its construction and operation. i

I cell a piece of copper tube in any'suitahle shape which will present a large portion of its external surface to the direct action of a jet of flame. I prefer coiling it in the shape of a cone, as seen in fig. 3, which. shape is best adapted to present the largest amount of surface to the flame S, as seen in fig. 2. The upper end, H, of this coiled tube, I attach to the vent of the bellows A, as seen in fig. 1, and the lower end, G, I pass through a hole in the lid of the carburettor, and through or around the pans, untilits lowcr mouth is in a position to discharge the air, (which has been heated in passing throughit,) into or upon the surface of the hydrocarbom fluid in the lowest apartment of the carburettoiy aml passing on in the direction of the arrows, (as soon in fig. 2,) until it reaches the upper apartment, when it passes by the tube L into the gasomcter D, and, following the direction ofthc arrows, is forced through the tube M to supply the various pipes and burners to which it is attached. For this purpose I attach a small gasometer, (see D, figs. 1 and 2,) to the top of the lid of the carburettor. I also insert a pipe, F, fig. 2, through the lid of the carburettor. This pipe is provided with a stop-cock, and a burner on its end, which isturned up in such a manner as to jet the flame S with the folds of the cone E.

This flaline is suppli'edhy chrburetted air, drawn directly from the carburettor, and is'made to brdnch in many directions by numerous slits crossing each other in the tip of the burner.

For the purpose of supplying the carburettor with hydrocarbon-fluid when needed, I insert into one end, or some other suitable part of the carburettor, the end of the pipe of a sufety-feeder, constructed as,fo-llows: I make a globular chamber, of metal, (see 0, iig. 2, which will hold suflicient fluid for one feeding. To the lower part of this chamber I attach a tube, with stop-cock, and at-the. upper part of thechamber I attach a funnel,

. It, and stop-cock. If the cock N be closed, and the cock T be opened, the fluid, K, poured into the funnel B would soon fill the chamber 0. Then, if the cock T be closed, and the cock N be opened, the fluid, K, will pass into thc-carburetter. I i l I Having described my invention, Iwill endeavor to describe some of its 'advantages.

It will volatilize the hydrocarbon-fluid in cold weather as well as in hot, which feature is deficient-in most of the carburetters in use.

With my improvement a lower grade'oi' hydrocarbon-fluids may be used with better-success than can be obtained with high-grade fluids in cold-air machines. I

Any number of carburetters may be attached by means of my invention to a. contihuous pipe leading out from one bellows, so that a whole block of buildings might be, supplied by one bellows sendingjgair to a separate carburettor ineach house, thus cheapening the expense to each consumer, and insuring'o. brighter and more economical light than can be obtained in coal-gas. i I

What I claim as my invention, and desire to secure by Letters Patent, is-

1. The coiled copper or other metallic pipe, E, substantially as described and forthe purpose-set forth.

2. The coiled pipe E, in combination with pipe F and flame S, and with the blower A and carburetter B 0, when connecting the blower with the carburetter, substantially as and for the purpose set 'forth.

3. The feederR O, with its chamber 0, funnel R, stop-cocks N and T, and its pipe, substantially as and for the purpose set forth.

WILLIAM MAROT MARSHALL.

Witnesses:

JOHN LITTLE, B. HALL. 

